PS3 Slim weird clicking and buzzing noise

This noise constantly happens when I play a game or stream movies.

[luminalucius]

sounds like overheated tea on a stove xD

[MrGgary]

I found out it was the HDD making the noise. I bought a new one, replaced it and everything worked flawlessly.

[Tewthpaste]

my Slim does that too. it's like randomly buzz and then a click right after it. It's not a loud buzz or anything and it is not the HDMI cable or my T.V sound. it came from inside the PS3. Sometime i will hear nothing at all and then sometimes i will hear it a couple times a day randomly.

[Strydza]

would i need to replace the hdd or can i just plug it out then in again?